1) there's nothing "wrong" with nitrile ADBVs
2) it's liketly that in LA, you're not really in "need" of silicone due to ambient temps; the nitrile will be plenty flexible in winter down there where you're at
3) any filter than has a nitrile ADBV, is going to be OK for the manufacture's stated FCI of that product
4) the Cyclone engine you have is a very clean running engine series and produces a fairly light soot load relative to the OCI duration; insolubles typically are not a big problem with these engines.
Sure - I like the silicone ADBVs and was very happy to see that the EGs had them to get that 10k mile rating. I typically use EGs or TGs. But honestly, I've used Puro filters in the past out to 10k with no issues (this was several years ago).